Method, control circuit, computer program product and printing device for an electrophotographic process with temperature-compensated discharge depth regulation
First Claim
1. A control device to optimize load image generation in an electrophotographic process, comprising:
- a light-sensitive and temperature-sensitive photoconductor layer for pixel-by-pixel exposure with a temperature-sensitive light source;
the photoconductor layer being more sensitive with rising temperature, such that given a predetermined quantity of light and predetermined charge it discharges deeper;
the light source emitting a lesser luminous power with rising temperature given a same actuation power;
a respective temperature compensation for the light source and for the photoconductor layer;
the temperature compensation for the photoconductor layer being at least one of adapting current flowing through the light source and adapting exposure time of the light source;
the temperature compensation for the light source being at least one of correction of the current flowing through the light source and a change of the exposure time;
for the temperature compensation of the photoconductor layer a measurement event which measures a discharge depth of the photoconductor layer given predetermined luminous duration and predetermined current through the light source; and
a temperature of the light source measured in the course of the measurement event being used as a reference value for the temperature compensation of the light source.
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Accused Products
Abstract
With a control device to optimize charge image generation in an electrophotographic process, a light-sensitive and temperature-sensitive photoconductor layer is exposed pixel-by-pixel with a temperature-sensitive light source. The photoconductor layer becomes more sensitive with rising temperature, such that given a predetermined light quantity it discharges deeper. With rising temperature, given the same actuating power, the light source emits a lesser luminous power. The luminous power of the light source and the discharge depth of the photoconductor layer are temperature-dependent via adjustment of the current and/or the luminous duration that flows through the light source and/or the luminous duration. During the measurement of the discharge depth, a temperature measured in the course of the measurement event is used as a reference value for the temperature compensation of the light source.
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Citations
15 Claims
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1. A control device to optimize load image generation in an electrophotographic process, comprising:
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a light-sensitive and temperature-sensitive photoconductor layer for pixel-by-pixel exposure with a temperature-sensitive light source;
the photoconductor layer being more sensitive with rising temperature, such that given a predetermined quantity of light and predetermined charge it discharges deeper;
the light source emitting a lesser luminous power with rising temperature given a same actuation power;
a respective temperature compensation for the light source and for the photoconductor layer;
the temperature compensation for the photoconductor layer being at least one of adapting current flowing through the light source and adapting exposure time of the light source;
the temperature compensation for the light source being at least one of correction of the current flowing through the light source and a change of the exposure time;
for the temperature compensation of the photoconductor layer a measurement event which measures a discharge depth of the photoconductor layer given predetermined luminous duration and predetermined current through the light source; and
a temperature of the light source measured in the course of the measurement event being used as a reference value for the temperature compensation of the light source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for optimizing load image generation in an electrophotographic process, comprising the steps of:
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providing a light-sensitive and temperature-sensitive photoconductor layer for exposure pixel-by-pixel with a temperature-sensitive light source;
the photoconductor layer becoming more sensitive with rising temperature such that given a predetermined quantity of light and predetermined charge it discharges deeper;
the light source emitting a lesser luminous power with rising temperature given a same actuation power;
providing a respective temperature compensation for the light source and for the photoconductor layer;
providing the temperature compensation for the photoconductor layer by at least one of adapting current flowing through the light source and adapting exposure time of the light source;
providing the temperature compensation for the light source by at least one of correction of current flowing through the light source and change of exposure time;
for the temperature compensation of the photoconductor layer, providing a measurement event in which a discharge depth of the photoconductor layer is predetermined given predetermined luminous duration and predetermined current through the light source; and
using a temperature of the light source measured in the course of the measurement event as a reference value for the temperature compensation of the light source. - View Dependent Claims (11, 12, 13)
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14. A control device to optimize load image generation in an electrophotographic process, comprising:
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a light-sensitive and temperature-sensitive photoconductor layer for exposure with a temperature-sensitive light source;
the photoconductor layer being more sensitive with rising temperature, such that given a predetermined quantity of light and predetermined charge it discharges deeper with rising temperature;
the light source emitting a lesser luminous power with rising temperature given a same actuation power;
a respective temperature compensation for the light source and for the photoconductor layer;
the temperature compensation for the photoconductor layer being at least one of adapting current flowing through the light source and adapting exposure time of the light source;
the temperature compensation for the light source being at least one of correction of the current flowing through the light source and a change of the exposure time;
for the temperature compensation of the photoconductor layer a measurement event which measures a discharge depth of the photoconductor layer; and
a temperature of the light source being used as a reference value for the temperature compensation of the light source.
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15. A method for optimizing load image generation in an electrophotographic process, comprising the steps of:
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providing a light-sensitive and temperature-sensitive photoconductor layer for exposure with a temperature-sensitive light source;
the photoconductor layer becoming more sensitive with rising temperature such that given a predetermined quantity of light and predetermined charge it discharges deeper with rising temperature;
the light source emitting a lesser luminous power with rising temperature;
providing a respective temperature compensation for the light source and for the photoconductor layer;
providing the temperature compensation for the photoconductor layer by at least one of adapting current flowing through the light source and adapting exposure time of the light source;
providing the temperature compensation for the light source by at least one of correction of current flowing through the light source and change of exposure time;
for the temperature compensation of the photoconductor layer, providing a measurement event in which a discharge depth of the photoconductor layer is determined; and
using a temperature of the light source as a reference value for the temperature compensation of the light source.
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Specification